2005 Audi Tt — MOT failures & pass rate
Across 24,738 MOT tests analysed for the 2005 Audi Tt, the most common recorded failure areas were lighting & signalling, suspension and brakes. Its pass rate of 73.5% was below the average for coupes & convertibles of a similar age (77.3%). Higher-mileage examples failed more often — 30.6% in the 150k+ group versus 13.1% in the 0-30k group.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 13.9% | 3,447 |
| 2 | Suspension | 12.2% | 3,023 |
| 3 | Brakes | 8.2% | 2,028 |
| 4 | Emissions & environmental | 7.1% | 1,759 |
| 5 | Body, structure & corrosion | 6.8% | 1,688 |
| 6 | Tyres | 5.0% | 1,232 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Position lamp | 1,924 |
| 2 | Coil spring | 1,453 |
| 3 | Headlamp aim | 1,269 |
| 4 | Pins and bushes | 1,241 |
| 5 | Joints | 1,210 |
| 6 | Malfunction indicator lamp | 1,125 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Suspension | 36.6% | 9,057 |
| 2 | Brakes | 34.3% | 8,481 |
| 3 | Tyres | 25.2% | 6,239 |
| 4 | Body, structure & corrosion | 15.1% | 3,735 |
| 5 | Lighting & signalling | 13.6% | 3,370 |
| 6 | Emissions & environmental | 9.8% | 2,425 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 0-30k | 351 | 13.1% |
| 30-60k | 2,593 | 18.4% |
| 60-90k | 6,712 | 24.6% |
| 90-120k | 8,531 | 28.6% |
| 120-150k | 4,602 | 29.5% |
| 150k+ | 1,939 | 30.6% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 5,703 | 27.4% |
| 2022 | 5,284 | 25.8% |
| 2023 | 4,980 | 26.3% |
| 2024 | 4,597 | 26.8% |
| 2025 | 4,174 | 26.1% |
What to check before buying a 2005 Tt
Before buying a 2005 Audi Tt, focus on the areas it most often fails on. Lighting & signalling accounted for 13.9% of tests for this year.
- Lighting & signalling (13.9% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Suspension (12.2% of tests): Worn drop links, bushes, springs or shocks — listen for knocks over bumps and check for uneven tyre wear. Typical repair: £150–£450 per corner.
- Brakes (8.2% of tests): Pads/discs are routine wear; binding, imbalance or corroded pipes are more serious — test for pulling under braking. Typical repair: £100–£350 per axle.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
How many 2005 Audi Tts pass their MOT?
73.5% of the 24,738 2005 Audi Tt MOT tests in this dataset passed — a 26.5% fail rate.
What is the most common MOT failure on a 2005 Audi Tt?
Lighting & signalling, recorded in 13.9% of tests, followed by suspension (12.2%).
Does the 2005 Tt get worse with mileage?
Its MOT fail rate rises from 13.1% in the 0-30k band to 30.6% in the 150k+ band.
Methodology & source. Based on 24,738 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-01. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.